remcos | 06daecd07c279e616630efa8dcdf825a6e3a69731f67a52872ad3b9e48ce859a

General

Target

$PLUGINSDIR/bvxiuwkw.dll
Size

16KB
MD5

fc8aa09cf3a758c8d53f5f2308bd517e
SHA1

dc283fce636887938075e853c6769927b3380f03
SHA256

4684ea37a97a5757612377341258d8698b91c92965abbf35d915f6c81037a697
SHA512

de53151aa0b2c3a180abf95d2764af5bec3732bfac0e53e7d41cd07688538074d0476e8b1d19bcf6d012fa3d2745f76c63ed5ea1eee9c6e35e62b097775931be
SSDEEP

192:4ruT5wvAi3OL1PJuIJHSArBWyvQmgbe45oz+GHdhF/BFWTmp6YeND:4ruT7ZSjyGZYdbHWiIXND

Score

10^/10

remcos grecious discovery rat

Malware Config

Extracted

Family

remcos

Botnet

GRECIOUS

C2

zubby2468.hopto.org:8975

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-P9X35M
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Extracted

Family

remcos

Version

3.2.1 Pro

Botnet

GRECIOUS

C2

zubby2468.hopto.org:8975

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-P9X35M
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2972	2488	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2328 wrote to memory of 2424	2328	rundll32.exe	29
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2424 wrote to memory of 2488	2424	rundll32.exe	30
PID 2488 wrote to memory of 2972	2488	rundll32.exe	31
PID 2488 wrote to memory of 2972	2488	rundll32.exe	31
PID 2488 wrote to memory of 2972	2488	rundll32.exe	31
PID 2488 wrote to memory of 2972	2488	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\bvxiuwkw.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\bvxiuwkw.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\bvxiuwkw.dll,#1
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2488
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 220
      4⤵
      Program crash
      PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2424-0-0x0000000075480000-0x0000000075489000-memory.dmp

Filesize
36KB

Download
memory/2424-2-0x0000000075460000-0x0000000075469000-memory.dmp

Filesize
36KB

Download
memory/2424-1-0x0000000075470000-0x0000000075479000-memory.dmp

Filesize
36KB

Download
memory/2424-3-0x0000000075480000-0x0000000075489000-memory.dmp

Filesize
36KB

Download
memory/2424-17-0x0000000075460000-0x0000000075469000-memory.dmp

Filesize
36KB

Download
memory/2424-16-0x0000000075470000-0x0000000075479000-memory.dmp

Filesize
36KB

Download
memory/2424-15-0x0000000075480000-0x0000000075489000-memory.dmp

Filesize
36KB

Download
memory/2488-4-0x00000000000D0000-0x0000000000149000-memory.dmp

Filesize
484KB

Download
memory/2488-10-0x00000000000D0000-0x0000000000149000-memory.dmp

Filesize
484KB

Download
memory/2488-18-0x00000000000D0000-0x0000000000149000-memory.dmp

Filesize
484KB

Download
memory/2488-19-0x00000000000D0000-0x0000000000149000-memory.dmp

Filesize
484KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads